Furnace runs but some rooms are too cold while others are too warm.

Steps:

• Ensure the furnace filter is clean and correctly installed.
• Check that all supply registers are open; partially close registers in overheated rooms to push more air to colder rooms.
• Verify that return grilles are not blocked by furniture or drapes.
• If your Westinghouse IFC allows blower speed adjustment via dip switches or jumpers, consult the installation manual to confirm correct heating speed tap is selected.
• For persistent imbalance, have a contractor evaluate duct design and consider zoning or duct modifications.